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Nam J, Dong P, Tarpine R, Istrail S, Davidson EH.Nam J, et al. Among authors: istrail s.Proc Natl Acad Sci U S A. 2010 Feb 23;107(8):3930-5. doi: 10.1073/pnas.1000147107. Epub 2010 Feb 8.Proc Natl Acad Sci U S A. 2010.PMID: 20142491Free PMC article.